Distribution characteristics of skipjack habitat in the western and central Pacific during the La Ni&#241;a periods

Yan Ran; Chen Xinjun; Chen Zuozhi

doi:10.3969/j.issn.0253-4193.2018.04.007

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Yan Ran, Chen Xinjun, Chen Zuozhi. Distribution characteristics of skipjack habitat in the western and central Pacific during the La Niña periods[J]. Haiyang Xuebao, 2018, 40(4): 76-85. doi: 10.3969/j.issn.0253-4193.2018.04.007

Citation:

Yan Ran, Chen Xinjun, Chen Zuozhi. Distribution characteristics of skipjack habitat in the western and central Pacific during the La Niña periods[J]. Haiyang Xuebao, 2018, 40(4): 76-85. doi: 10.3969/j.issn.0253-4193.2018.04.007

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Distribution characteristics of skipjack habitat in the western and central Pacific during the La Niña periods

doi: 10.3969/j.issn.0253-4193.2018.04.007

1.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
2.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture, Shanghai 201306, China;National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China;Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture, Shanghai 201306, China
3.
South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China

Received Date: 2017-06-04
Rev Recd Date: 2017-08-15

Abstract

Abstract

Skipjack is a commercially important species in the ocean, mainly distributed in the western-central Pacific, and its fishing grounds and resource abundance are susceptible to marine environmental factors. Based on the production data of the tuna purse seine fleet in the main fishing area (15°S-10°N,120°E-155°W)during the period 1995 to 2014, the sea surface temperature (SST) and sea surface height (SSH) data, the habitat models based on SST and SSH were established using the arithmetic mean (AM) model in the period of weak, medium and strong. The results show that in the water with Habitat suitability index (HSI) greater than 0.6, the proportion of operation in each stage of La Niña is above 60%. With the data obtained during weak La Niña (December 2005-March 2006), medium La Niña (October 2011 to March 2012) and strong La Niña (June 2010 to April 2011), it is found that the main fishing ground distributed in the waters with HSI greater than 0.6 in the HSI model, and its percentage of fishing times reached 53.9%, 66.5% and 63.6%, respectively. The results show that with the increase of the intensity of La Niña, the abundance is obviously increased, and the distribution of fishing ground spread to the northeast and southeast. The study shows that the habitat model based on SST and SSH in different La Niña modes can predict the skipjack in the western-central Pacific and provide a reference for the analysis of the fishing ground during the La Niña period.
- La Niña,
- skipjack,
- habitat suitability model,
- sea surface temperature,
- sea surface height,
- the western and central Pacific

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References(16)

References

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